Why no Media Server browsing for W10 Mobile ?

The recent update to Movies and TV app (10.17042.14211.0) brought Media Server browsing capability to PC and Tablet.
Why wouldn't such a simple feature work on mobile ?
VLC and Smart Player has Media server browsing capability on mobile.

The recent update to Movies and TV app (10.17042.14211.0) brought Media Server browsing capability to PC and Tablet.
Why wouldn't such a simple feature work on mobile ?
VLC and Smart Player has Media server browsing capability on mobile.